Mining-machine.



c. E. DAVIS, MINING MKCHINE- APPLICKTION,FILED IAI l0| ISIS.

Patggjcd Oct. 23, 19W. 1

\ inns-slain I.

M Na C. E. DAV IS.

MINING MACHINE- rvucmou FllED vumw. ms.

Patnnted Oct. 23,1917. 2 turns-sun 2 Y ,UNITEDSTATES PATENT OFFICE.

enemas n. nsvxs, or cmcneo, nmmors, ASSIGNOB TO GOODMAJEI 'mmrrso'rt'rmne comm, or. cnxoaco, ILLINOIS, A cosrona'non' or nmmoxa.

MINING-MACHINE.

Specification of ietters Patent.

Patented Oct. 23, 1917? Application filed March 10, 1915. Serial No. 18,809.

To all whom it may concern: Be it known that I, Cnannns E. Davis, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented'a certain new and useful Improvement in Mining-Machines,

of which the following is a specification.

Thisinvention relates to mining machines and has-for its object to provide a new and improved device of this description particular y adapted to'cut a straight face cut. The invention is illustrated in'the accompanying drawings, wherein j Figure 1 is a vertical sectional view through a. machine embodying the inventron;

Fig. 2 is a sectional view taken on line 22 of Fig. 1';

Fig. 3 'is a diagrammatic view showing.

the machine as cut. g

Like numerals refer to like parts throughout the several figures. A j

Inthe construction shown in the drawings I have illustrated a machine havin a it approaches the end of its 'main frame 1 mounted upon wheels 2,wh1ch run upon rails 3. Mounted upon the main frame 1 is a supporting frame 4, which ismovable with relation to the frame 1. The

frame 4 is provided with a motor 5, which rives a gear 6 loosely mounted on a'shaft 7. A clutch member 8 is slidably mounted upon the shaft 7 andis adapted to engage a clutch member on the hub of the gear 6 so 85 united. Theshaft 14 is provided at one end with the worm 16, which engages the worm wheel' 17 on the shaft -18 mounted ,upon the supporting frame 4. -A gear 19 is; mounted upon the shaft'1-8 so as to rotate therewith, and engag a curved rack 20 on themain frame 1. The end of theshaft 18 prolects flwit a beyond the gear l9-andis provided guiding device 22 so as to prevent guide roller 21, which "engages 'a' e gear 19 from being forced away from the rack when the machine is in operation. At the other end of the shaft 14is'a worm 23, which engages a 'worm wheel 24 on a shaft 25. A gear 26 is connected with the shaft 25 so as to rotate therewith, said gear engaging a curved rack 27 on the main frame 1. The end of the shaft 25 projects beyond the gear 26 and is provided with a dguiid'e evlce roller 28, which en ages aguiding 29 connected with t e mainframe 1 so as to prevent the'gear 26 from being forced out of engagement with the rack 29 when the machine is in operation. The supporting frame 4 has a finishedrface 4,'wh'ich slides on the finished face 1, of the mainframe.

It will therefore be seen that only a small portion of the face of each frame needs to be machined. .It will be. noted that fthe racks 27 and 20 are both curved but that they have different curvatures. ,The sup- .wardly projecting supports 30' provided with the racks 31.. Mounted between these supports is the cutting element 32, which has means for engaging these rocks so'that' the cutting element maybe moved up and down between these supports. Any suitable means for this purpose may be used. As herein shown, the cutting element" is which are gears 34 which engage the racks 31. The shafts 33 are driven from the moporting frame 4 is provided with the upprovided at its sides with shafts 33, upon tor 35 through the bevel gears 36 and 37.

the shaft 38, the worm 39, the worm wheel 40, the shaft 41, the'worms 42 (see Fi 2),

andthe worm wheels 43-eonnected wit the shaft 33. It will be seen that whenthese gears 34 are rotatedthe cutting element may e moved up or down. The connection between-thegears 34 and the motor. is controlled by the clutch 44 and'lever 44'. The

cutting element is provided with a cutterarm 45, which carries the usual-cutter chain (not shown), said cutter chain being driven by the sprocket 46.

-When it is desired to operate the machine, the entire device is moved up to'the face .ofthe coal and the -end of the cutter arm is placed in position against the coal not at the point where it is desired'to force it into the coa1. .The.flexi'blecable-lwk then connected to a fixed devicevflxat k e front of the 'maehinefthe motor startedaiid 1 I clutch member 8 ;moved toconnect the mlo .15 4 getting frame 4- and the cutting element.

' into ;the coal.

tor with the aha 7 and the driim 11. The "cutter chain is then started and the rotation of the drum 11 forces the cutter arm When thecutter arm has reached the propeth position the drum 11 is disconnected from the 'motor and clutch member 15 is.moved so as to connect the -motor,5 with the shaft 1,4, This-shaft is then rotated, thereby" rotating the shafts 18 and-as and the ears 19yand so. These gears are atthe giposit'e ends of their res ective racks-an are; rotated the. same 'ireotion. Thisrotation causes them to move; s16: their res active racks in opposite direct one, o" with them the suphe. cutter arm'is-then moved across the coal, the end thereof moving so as to cut a substantiall straightface, as shown in Fig. 3. When t e mac "inc reaches the position I shown in'Flg. 8, the motor is disconnected from the shaft 14 and the flexible cable is connected to a fixed part 48 (see Fig. 3} at the rear of the-machine. .The motor thenconnected with 'the drum 1.1 and said .drurn moved to. as to pull the machine bodil' to therean; The cutter chain during a this time 'is in operation and makes the, final. withdrawing cutai --The frame 4 i provided with a series of direction changin? plulieysaa for the flexible cable 12.

' of. the main frame, a pinion engaging each rack, said pinions connected with-the supporting frame, means fordrivi --'ting element carried by said supporting frame." .2. A m ning machine comprising a ma. frame, a supporting frame'mounted thTJP on, a'j'curved rack connected with each end...

.of thejmain frame, a pinion engaging each rack, said pinions'conne cted with the supporting frame, means for driving said pin- 1011' so as to move the siipporting frame q with relation to the main frame, means for preventing said pinions from being forced away. from said racks when. the-machine is .f

in, operation, and-a" cutting element car- 'ried y said supportlpg frame. I

5 '3.- mining mach-macomprising a main frame, a movable supporting-frame mounted thereonfarack; connected with'each end -of-the main frame one of said racks being carved. a pinion engaging. each of said said pin. ions so. as, to move the supportmgframe. with relation to the main frame, and a cuta 72 A miningmach racks, said pinions connected .with the su porting frame, a shaft extending longitu inally of the supporting frame, said shaft operatively connected with said pinions so' as to rotate'them.

4. A mining machine comprising .a main frame, a supporting frame, a motor mounted on said supportingframe, a horizontal shaft on the supporting frame, operatively' connected with said motor, two. separated vertical shafts on the supporting frame, op-' eratively' connected with the horizontal shaft, said shafts projecting beyond the bottom of said supporting frame, pinions on said vertical shafts, racks on the main frame, with which said pinions engage, and a cutting element mounted upon said supporting frame.

5. "A mining machine comprising a main frame a supporting frame, a motor mounted on said supporting frame, a horizontal shaft on the supporting frame, operatively connected with said motor, two separated vertical shafts on the supporting frame, -'operatively connected with the horizontal shaft,

. said shafts-projecting beyond the bottom of said supporting frame, pmlons on said. verti-v cal ishafts, racl s on the main frame with which said pinlons engage, guiding devices on the main frame; for preventing said pinions from moving away from their associated racks, and a cutting element" mounted upon said supporting frame.

6. A mining machine oomprisinga main frame, a supporting frame. mounted thereon two separated 'pinions connected with sci supporting frame, two separated racks con-p nected with the main-'frame thepinionsen. gaging said racks, meansorcausing-said pinions. to travel along said 'racks' simul'- taneously' and. in opposite directi'dns,and a porting frame.

thereon,=a rackconnecte'd with each endof said main frame, a pinion engaging each of said racks, said pimons connected with the supporting frame,-'a,shaft extending longitudinally ,ofthe supporting frame, and .11a

operatively connected with said pmions so as to rotate 'them,.-the ends of said shaft mow I he comprising a frame, a movable-supporting frame mounted cutting element mounted upon said supf ing in opposite directions across said main frame when the, shaft is rotated. k

SSA-mining machine comprising a main frame, a movablesupporting.framemounted thereon, a cutter carried by said support rains, it rack-connected with each end 0.

said mainframe, two pinions, one .engagin each of "said rhcks, vertical shafts connects withsaid pinions, .a longitudinal shaftcar ried' by said supporting frame and-' oper- 'ativelvconnected with said vegtiEa-l shafts,

whereby when the longitudinal shaft is-rotated the piniona engagmg the raclgs are porting imi'K bv said supporting frame and operatwely rotated and the supporting frame moved with relation to said mainframe, the ends of said longitudinal shaft moving in opposite directions when the shaft is rotated. I

9. A mining machine comprising a main frame, a movable supporting frame mounted thereon, a rack connected with each end of the main frame, a pinion engaging each of said racks, vertical shafts connected with said pinions andprojecting through the sup e,, a longitudinal shaft carried connected withsaid vertical shafts, whereby when the longltudinal shaft is rotated the pinions engaging the racks are rotated and 15 the supporting frame moved with relation to the main frame. 7 In testimony whereof, I afiixmy signature,'in the presence of two witnesses, this 24th day of February, 1915.

a CHARLES E. DAVIS. \Vitnesses: v

MINNIE M. LINDENAU, ELLA THIEME. 

